Neight, Night
Neight, Night—These two names are anglicised forms of the Scottish name M'Knight (Mac Neachtain), other anglicised forms being Knight, M'Night, M'Nite, and McNeight. Also McNaught. Most of all these forms being found in Ulster and Galloway.
Alphabetical Index of Anglicised Surnames in Ireland
See also Woulfe’s Irish Names and Surnames
… and O'Hart's Irish Pedigrees